Gear-case.



TED AUG. 4,

- P. PRAY.

GEAR CASE.

APPLICATION FILED OOT.14,'1901.

UNITED STATES PATENT oFFioE.

PETER PRAY, OF NEW YORK, N. Y., ASSIGNOR TO COLUMBIA MACHINE WORKS ANDMALLEABLE IRON 00., OF BROOKLYN, NEW YORK, A CORPORATION OF \"EW YORK; X

/ GEAR-CASE.

Patented Aug. 4, 1808.

T 0 all whom it may concern:

Be it known that I, PETER FRAY, a citizen of the United States, residingat the borough of Brooklyn, county of Kings, city and State of New York,have invented an Improvement in Gear-Cases, of which the following is aspecification.

My invention relates to an improved form of gear case for general useand especially for use on trolley cars and other vehicles. As heretoforeemployed these gear cases have been made with metal peripheries andsides, which were crushed in and buckled against the gears in certainkinds of accidents and particularlywhen striking such an obstruction asa stone between the car tracks; the gears were thus injured and oftenbroken and could not be turned mitil the cases were removed.

In the device of my invention, the cases are made with'sheet metal bandperipheries having flanged edges and wooden sides secured to the samewithin the flanged pen'pheries. The sheet metal band peripheries areprovided with flanges and spaced apart tongues, both of which comeoutside of the wooden sides, the tongues being secured thereto by bolts-End curved members with flanges are connected to and strengthen thecases and bracket mernlx'rs support the cases from the frame of the caror vehicle. In case of an accident, with my improved gear case, thewooden sides are broken up and fall away, leaving the sheet metalperiphery to spring back away from the gears leaving the same free, orelse when the wooden sides are broken away, an easy matter to so bendthe metal peripheries as to bring them out of contact with the gears.

In the draw; g, .Figure 1 is a perspective view of the device of myimprovement. Fig. 2 is a vertical tmnsverse section on about the dottedline .r, r, Fig. 1. Fig. 3 is a longitudinal section at one end'of theease.

The sides of :he case a, a, and b, I) are in pairs placed psmllel withone another and in The form of the gear case is generally ellip' ticalwith one end smaller-than the other, the

opposition; that is to say,the sides a, a are shaft opening 5 beingsmaller than the shaft opening 4 on account of the sizes of the shaftstherein; the periphery of the case is made-in two similar arts of metal0, (I, comparatively thin and lig it and I provide end flanges e,.f,with each of which is formed end curved members 6, f. The flanges e, f,are bolted together and the curved members 6, f, eonform in outline tothe periphery c, d, and are connected thereto by suitable bolts orrivets, preferably rivets, as there is no occasion to separate theseparts, therefore the criphery c is made substantially integral witi theend flanges e and curved members e, while the periphery d issubstantially made integral with the end flanges f and end curvedmembers Th sides a, a, and b, b, are to be received between and conformin shape with the sha )e imparted to the periphery of metal ban s; the o)posite edges of the periphery of curved metal bands 0, d, are madealike; that is to say,they are notched at spaced apart intervals and areoverturned at the bases of the notches into the series of flanges 6 andthe series of intermediate tongues 7. These tongues are about twice thelength of the flanges and they are perforated and both the flanges 6 andthe tongues 7 come outside of the sides a, a, and I), Z) and lie againstthe outer faces thereof.

I provide bolts 8 which pass through the openings in the tongues 7 neartheir free ends and through openings corresponding therewith in thewooden sides of the gear case; these bolts are shown with specialplainness in Fig. 2. I have also shown and prefer to employ screws 9which pass through the pe ripheries c, d, of metal down into the edgesof the sides a, a, and b, b, so that between the bolts 8 and tongues 7and the screws 9, the said peripheries are firmly and perinanentlysecured to the wooden sides of the gear case.

I have shown and prefer to employ the bracket members 10 and 11, themember 10 having parts at right angles to one another with one partconnected to the outer surface of the case and the other memberconnected with the frame of the machine, while the member 11 has abracket extending out from one side of one end flange e and overturnedbeyond the side of the gear case so as also to be adapted to be attachedto part of the frame of the machine. r

Theseeases are usually employed where i i x l i there are two gears ofdifferent sizes on juxplace around the gears and their shafts.

' I claim as my invention:

1. A gear ease eomprlsmg wooden sides of predetermined outline, aperipheral band of sheet metal extending across between thev sides andnotched at intervals, and having flanges and alternate tongues extendingdown therefrom and means for connecting said wood and metalpartstogether and for supporting them fromt e frame of the ve hicle ormachine.

2. A gear case comprising wooden sides-of predetermined outline,aperipheral band of sheet metal extending across between the sides andnotched at intervals and having flanges and alternate tongues. extendingdown therefrom, bolts passin' tthrough the tongues and sides of wood ands ews pas ing through the edges of the peripherallband to the edges ofthe sides of wood to hold the said parts together, means forst1fi'ening\and strengthemng, and other means for supporting the saidgear case from the frame of the vehicle or machine. I

A gear case comprising wooden sides of predetermined outline, aperipheral band of sheet metal extending across between the sides andnotched at intervals, andhaving 40 flanges and alternate tonguesextending down therefrom, bolts passing through the tongues and sides ofwood and screws passing through the edges of the peripheral band intothe edges of the sides of wood to hold the said parts together, endflanges having curved members conforming to and fixed to the peripheralband of sheet metal and the flanges bolted together and bracket membersof suitable form for supporting the. gear case from the frame of thevehicle or machine.

4. A divisible gearcase coin )rising wooden sides a, b, and a, b, inparallel pairs in opposition and of curved outline with juxtaposedmeeting edges, curved peripheral bands of 5 metal extending around andacross between the sides and with edge notches at intervals, and havingflanges and alternate tongues extending down therefrom, means connectingthe bands and sides at said tongues, means connecting the parts of thegear case andmeans for supporting the gear case from the frame of thevehicle or machine.

Signed by me this first d y of October 1907.

PETER FRAY.

Witnesses GEO. T. PINCKXEY, BERTHA M. ALLEN.

